CONGREGATIO

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
CONGREGATION. A society of a number of persons who compose an ecclesiastical 
body. In the ecclesiastical law this term is used to designate certain 
bureaux at Rome, where ecclesiastical matters are attended to. In the United 
States, by congregation is meant the members of a particular church, who 
meet in one place worship. See 2 Russ. 120. 
    

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